Improvement in railroad-car ventilators



J. S. WILLIAMSON & B. J. BICKNELL. Railroad-Car Ventilator. N0. 130,965.Patented Aug. 27,1872.

UNITED STATES JOHN S. W'ILLIAMSOA AND BYRON J. BIOKNELL, OF MEMPHIS,TENNESSEE.

PATENT OFFICE.

IMPROVEMENT IN RAILROAD-CAR VENTILATORS.

To all whom it may concern Be it known that we, JOHN S. WILLIAMSON andBYRON J. BIcKNELL, of Memphis, in the county of Shelby and State ofTennessee, have invented a new and valuable Improvement in a Device forCooling Railroad (Jars; and we do hereby declare that the following is afull,

clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawing making'a part of thistransmitting motion thereto, substantially as 4 hereinafter described.

Referring to the drawing, A designatesrotary fans attached to transverseshafts B journaled to and between the sides ofa railroad coach orpassenger car near the roof thereof. 0 designates a belt connecting theshafts B B.

' D designates an inclined belt connectingone of said shafts with atransverse shaft, E, which has its bearings in the sides of anadjustable frame F. G designates channeled standards which hold saidframe and allow it to move up and down. H represents spiral springsresting on posts H and supporting the standards or sides of the frame F.H designates a belt-wheel on the shaft E; H a belt-wheel on the axle Iof the car; and H, a belt passing through holes in the floor of the carand coupling the wheels H 11 lNhen the car is in motion the fans aremade to rotate through the medium of the shafts, belts, and belt-wheelsor pulleys. The object of the yielding frame F is to prevent the belt Hfrom being strained or broken by the motion of car on its springs.

The pulleys H B may be conical to allow the speed of the fan to beregulated with facility. The shafts B B E will be provided withbelt-pulleys, either plain or grooved, to hold the belts (3 D.

What we claim as new is-- The adjustable frame F and springs H, incombination with a car-axle, belt H shaft E, belt D, and rotary fans A,substantially as described.

In testimony that we claim the above we have hereunto subscribed ournames in the presence of two witnesses;

JOHN S. WILLIAMSON. BYRON J. BIOKNELL.

Witnesses:

JAMES B. (3001c, A. F. ScHULzn.

